Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract An isolate ofFusarium oxysporum (MT-6) was obtained from pasture soil in New Zealand in 1987. The isolate was grown on rice and fed to rats in a ratio of 50% and 10% of a complete diet. All rats died within 16 hr and showed mild intestinal and thymic hemorrhage. The major identifiable toxin was moniliformin found at a concentration of 9 mg/g in the rice culture. Purified crystals of moniliformin fed to rats at concentrations of 8, 5 and 3 mg/g of rat diet caused hemorrhaging in the intestines and death of 3 of 3 rats within 16 hr. Dietary concentrations of 2.5 and 2 mg/g of moniliformin killed 2 of 3 rats and concentrations of 1.5 and 1 mg/g killed 1 of 3 rats. No lesions were observed in 3 groups of 3 rats fed a diet containing 0.75, 0.5 or 0.25 mg/g of moniliformin. Intragastric intubation of moniliformin caused hemorrhage of the small intestine and death in 5 of 5 rats at each concentration of 100, 80, 60 and 40 mg/kg body weight and death of 4 of 5 rats at 20 mg/kg. No observable toxic effects were observed in groups of 5 rats each receiving 10, 5 and 2.5 mg of moniliformin/kg body weight.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food safety 5 (1983), S. 0 
    ISSN: 1745-4565
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zearalenone, a phytoestrogen produced by various species of Fusarium, regulates perithecial formation in F. roseum ‘Graminearum’. The response is concentration dependent, enhancing at low concentrations (1–10 ng) and inhibiting at high concentrations (10–100 μg). The biological activity can be modified by varying the chemical structure of the parent molecule. Zearalenone binds to mammalian estrogen receptor protein competitively with estradiol. Conversely estradiol binds to specific receptor protein from Fusarium mycelium.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food safety 8 (1986), S. 0 
    ISSN: 1745-4565
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A Holstein cow was given a single, oral dose of T-2 toxin (200 mg), and blood and urine samples were collected at regular time intervals for 48 h. The animal was dosed once more with the same amount and samples were again collected over another 48 h period. Trace amount (2 ppb) of T-2 toxin was detected in the blood up to 24 h as well HT-2, TC-3, and T-2 tetraol. De-epoxy-T-2-tetraol was detected in the blood and urine up to 48 h. No T-2 could be found in the urine but HT-2, TC-1, TC-3 and T-2-tetraol were detected. In addition, three major metabolites, i.e., iso TC-1, de-epoxy-TC-3 and de-epoxy-T-2 tetraol, were found in the urine. Production of these metabolites was maximum at 14–20 h after administration of the toxin. No substantial accumulation of T-2 toxin derivatives were found in the lung, heart, liver or kidney when the cow was sacrificed at the end of the experiment.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 28 (1990), S. 370-371 
    ISSN: 0749-1581
    Keywords: 1H NMR ; 13C NMR Zearalenone ; 8′-Hydroxyzearalenone ; Zearalenol ; Zearalanone ; Zearalanol ; Dimethoxyzearalenone ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Assignments of the hydroxylated aromatic carbons C-2 and C-4 of zearalenone and its derivatives are reported. The C-2 carbon is more deshielded than C-4 for zearalenones in which the C-2 hydroxy group is intramolecularly hydrogen-bonded to the C-12 lactone carbonyl.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1573-0832
    Keywords: mycotoxins ; Fusarium spp. ; trichothecenes ; maize ; deoxynivalenol ; 3-acetyldeoxynivalenol ; 15-acetyldeoxynivalenol ; zearalenone ; moniliformin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Eighty-two cultures of Fusarium species isolated in 1986 from moldy maize in Minnesota were each cultured on rice for 4 weeks and found to produce the following mycotoxins: F. graminearum isolates, deoxynivalenol (DON, 4–225 μg/g), 3-acetyldeoxynivalenol (3-ADON, 2–4μg/g), 15-acetyldeoxynivalenol (15-ADON, 1–35 μg/g) and zearalenone (ZEA, 5–4350 μg/g); F. moniliforme, fusarin C (detectable amounts to 1000 μg/g); F. mòniliforme, F. oxysporum, F. proliferatum and F. subglutinans isolates, moniliformin (15–6775 μg/g); F. moniliforme, F. proliferatum, and F. subglutinans isolates, fusaric acid (detectable amounts). Other mycotoxins screened for in each rice sample and not detected were T-2 toxin, HT-2 toxin, neosolaniol, T-2 tetraol, nivalenol, fusarenon-X, scirpenols, alpha and beta trans-zearalenols, wortmannin, and fusarochromanone. The rat feeding bioassay indicated that other, unidentified toxins may be present.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Twenty samples of unpolished (rough) rice collected in Arkansas and Texas during the 1995 harvesting season from fields exhibiting Fusarium sheath rot disease or panicle blight were previously shown to include 8 samples positive for fumonisin B1(FB1) in the range 2.2–5.2 ppm, and moniliformin (MON), but no beauvericin (BEA), deoxynivalenol, its derivatives or zearalenone were detected. Fifteen cultures of F. proliferatum were established from the 20 rough rice samples. Single spore isolates of each culture were grown on rice and tested for the production of fumonisins (FB1, FB2, FB3, etc.), MON and BEA. All 15 isolates produced FB1, FB2, MON and BEA in culture on rice. No deoxynivalenol, its derivatives orzearalenone were detected. Seven cultures produced FB1 at 〉50ppm (range 80–230 ppm), with therest producing FB1 in the range 14–43 ppm.FB2 was produced in the range 5–47 ppm, and those cultures which produced the most FB1 also produced the most FB2. Of the 15 cultures producing MON, 11 produced it at 〉100 ppm in the range 188–6018 ppm, with the rest producing in the range 7–64 ppm. BEA was produced in the range 109–1350 ppm. Other derivatives of fumonisins, including FA1, FA2 and partially hydrolyzed FB1, as well asseveral unknown metabolites including a compound with MW 414, were identified in culture extracts by continuous flow fast atom bombardment with ion spraymass spectrometry (CF/FAB/MS). Further study is needed to identify the factors that control production of FB1, MON and BEA by F.proliferatu in culture and in field samples.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1573-0832
    Keywords: New Zealand ; Fusarium ; mycotoxin ; deoxynivalenol ; acetyldeoxynivalenol ; fusarenon-X ; zearalenone ; wortmannin ; moniliformin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Sixty-two isolates of Fusarium were obtained from pasture grass and soil from various areas of New Zealand and identified as F. anthophilum [2], F. avenaceum [17], F. crookwellense [8], F. culmorum [4], F. graminearum [1], F. nivale [3], F. oxysporum [3], F. sambucinum [17], F. semitectum [1], F. tricinctum [1] and an unidentified Fusarium spp. [5]. These isolates were grown on autoclaved rice and tested for toxicity to rats in feeding tests. Eighty two percent of the isolates were toxic, of which twenty-four percent were severely toxic and caused hemorrhages of stomach and intestine, hematuria, and finally death. Cultures of the most toxic isolates contained 0.1 to 104 ppm of deoxynivalenol, 0.7 and 7 ppm of 15- and 3-acetyldeoxynivalenol respectively, 0.2 to 4 ppm of fusarenon- X, 11 to 1021 ppm zearalenone, 40 to 272 ppm of the hemorrhagic factor (wortmannin), 2,100 to 7,200 ppm of moniliformin, 565 ppm of the cytotoxic factor (HM-8) and enniatin in substantial concentrations. F. sambucinum is reported as a moniliformin producer for the first time.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Mycopathologia 125 (1994), S. 83-91 
    ISSN: 1573-0832
    Keywords: Colonization ; Computer diskettes ; Fouling ; Fungal isolation ; Magnetic media ; Scanning electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Computer diskettes can be colonized by saprophytic fungi, especially in the humid tropics. Fungi of the generaAlternaria, Aspergillus, Epicoccum, Paecilomyces, Penicillium, andTrichoderma were observed on diskettes from several tropical countries. Common saprophytic fungi from Minnesota colonized clean standard and high density diskettes in growth chambers, indicating that fungal contamination could occur wherever temperature and humidity were adequate.Fusarium species infested diskettes buried in garden soil in Minnesota. Audiotapes, videotapes, and computer magnetic tapes chemically resemble diskettes and also can be colonized by fungi, as can photographic film. The Mylar core of these magnetic media did not support the growth ofPenicillium glabrum, the most aggressive fungus in diskette inoculation studies. However, growth of several fungal species was enhanced when the common plasticizer, lecithin, was added in powdered form to nutrient agar, suggesting that this ingredient of the diskettes may be metabolized by the fungi.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1573-0832
    Keywords: 15-acetyldeoxynivalenol ; Deoxynivalenol ; Fusarium culmorum ; Fusarium graminearum ; Fusarium head blight ; Nivalenol ; Scab
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Wheat cultivars (Stoa, MN87150, SuMai-3, YMI-6, Wheaton) and barley cultivars (Robust, Excel, Chevron, M69) were inoculated in the field with isolates ofFusarium graminearum andF. culmorum. The diseased (Fusarium head blight) kernels were analyzed for deoxynivalenol (DON), 15-acetyldeoxynivalenol (15-ADON) and nivalenol (NIV).F. culmorum produced all three trichothecenes on all cultivars tested whereasF. graminearum only produced DON and 15-ADON. There was no well defined correlation between DON production in the host and resistance although the data tended to favor SuMai-3 as having definitive resistance to bothF. graminearum andF. culmorum.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...